Spring-wheel.



A. B. HAMILTON.

SPRING WHEEL.

APPLICAUON FILED MAY z5. m12.

Patented Jan. 15, 19H8.

2 SHEETS-SHEET 2.

NVENTOR if: @s #www 'V'VITNESSES QM L ATTORNEY Leeaeee .Appli Po all whom i may conservi f Be 1t known that l? Anios tell l the following is e speciieation..

This invention relates te resilient 'Wheels and more particularly to the tire sonstwie tion thereof and has for one of its objects the provision of zi spring Wheel which gives the maximum/resiliency, which has ne nuno- -turable parte, and which will toire the pince 'o'f the pneumatic tire now used so genereliy,

. Another and more speeiie objet:

invention is to provide Wheel l i@ inner and outer rims, spring arms ri icllf; oonnected to the inner run en@ heving snob lng bearing on the outer rim nf t .Lor limiting the rotation of one rim relative the other, and means for preventing e movement of the rims in reggere to eeen other.

The invention also aims more nseful, practical and eomrnerenllv er, sirable.

With these and other objects `in view will become lnorenpparent the descriptionipr'oceeds, the invention consists in Certain novel features of construction7 Combinetion and arrangement of parts es will loe hereinafter fully described, illustrated and claimed.

In the drawings, i Figure l is e side elevation of my proved Wheel.

Fig. 2 is a central sectional view teiten centrell7 between the side feces of wheel and showing the lower half tl'ierer Fig. 3 is a transverse sectional view on the plane of line of Fig. l.

Fig. 4 is a section on the plane of 4 4 of Fig. l.

F ig. 5 is a, detail perspeetive view of one ofthe spring; arms and F i 6 is a detail perspective View of e ifi-- 'mem or to be hereinafter more fuliy (lescribed.

Referring in detail to the chewing-s by numerals, l designates the wheei hulzfwhieir is connected to the inner rim 2 by e plo.- rality of preferably steel spokes 3.

An outer rim 4 of greater diameter than the inner rim is arranged eonoentrieally therearound and is spaced of the faire i5, MMS.

Serial No. 171,915.

*tence from the periphery thereof. rihis outer rii'n be nrovireo with e solid rubtire and is further equipped with fr piu.; ity of inwerdijy' proieting radial pins m eden externally adportions for securen the outer rim Within the internally tnreeoed bosses The inner rim 1s formed 7ith e tlnrnlity of circumferential slots 8 h 'the pins 6 extend. The side s of hf slots ens-age the pins to hold ein egeiinrt l te, movement relative to i ner rim hut ..-e slots are of sufficient allow e slight rotation oi the rims i each other. Zi. emp or housing 9 for each of the pins and these he circuler in Cross section.

i l are not arranged s but between e fourmi this flispurpose intencled. nrnis il :and 12 et eir inner ends to the er rinn extend ohliqnely fein the tivo rims and i. .n coi ith the outer rim. se sgfirinp; s may he formed of let livret merel no are erich provided on i* outer ends with shoe i3 which Slides beek and 'forth on s une A- secnred to the inner fece of the outer rin.h

n" th relative rotation the two t other Without the wheel, l ,ners le v 'hiel-1 l, extend obli qnely .ons and which inner ends to L 1 is bent alielly right the bar to 'isis through :i

'ser ci to the inner The mein portion of i outer rim by .o enti. the @i portion runs i the slot on 'i neunte-i e coil the tongue enel are arranged in ont'virflijf toward i reve onnf three pull bers to le e ent o preserve the balance iii@ wheel v A relative req i'ini, slotted brackets secured .to the outer.

' ends tation of the tWo rims and Where these pull bars are used, they take the place of the' spring arms. When the Wheel is Working, the shoes slide back and forth on their guides and the pull bars have a circumferential play within the slots of the brackets.

From the foregoing description taken in connection with the accompanying drawings, it will be evidentthat I have provided a very simple and practical' spring Wheel which has very substantial parts, removably connected in most instances, so as to be replaceable by similar parts if occasion arises.

rim through which said bars extend, each bar having lateral extensions on the outer end engaged between the particular4 bracket and the outer rim, said extensions bearing against said brackets on each side ofthe slots in the brackets to prevent displacement of said bars from said brackets, and a pair of circumferentially disposed springs Within each bracket, said springs bearing against the particular bar from opposite directions.. 2. In a Wheel, an inner rim, an outer rim" concentric with the inner rim and of greater diameter, spring bars connected to the inner rim and extending outwardly so that aline connecting the ends of a particular bar Will be dis osed diagonally and having the outer bgent to extend radially and bearing against said outer rim, slotted brackets secured to the outer rim through WhichA said bars extend, each bar having lateral 4extensions on the outer end engaged betweenjthe particular bracket and the outer rim, said extensions bearin against said brackets on each side of the sots in the Ybrackets to prebi'ackets, and a pair of circumferentially disposed springs Withiny each bracket, said springs bearing against the particular bar from opposite directions.

3. In a Wheel, aninner rim, an outer rim concentric with the inner rim and of greater diameter, spring bars connectedto the .inner rim and exteiidingoutwardly so thata line connecting the end-s of a particular bar will vent displacement of said bars from said be disposed diagonally and having the outer ends bent to extend radially' and bearing against said outer rim, the inner and outer end portions of said bars bent to extend radially and the portions intermediately between said end portions extending substantially circumferentially, -slotted brackets se! cured to the outer riin through. which said bars extend, each bar having lateral extensions on the outer ends engaged between the vparticular bracket and the outer rim,`

said extensions bearing against lsaid brackets f on each side of the slots in the brackets'to prevent displacement of said bars from said brackets, and a pair of circumferentially disposed springs Within each bracket, said. springs bearing against the partieularbar from opposite directions.

4. In a Wheel of the characterrdescribed, an inner rim, an outer rim, means foivpreventing a lateral movement of said rims rel-v ative to each other, spring arms secured to they inner rim and having a sliding engagement with the outer rim, spring pull bars secured to the inner rim and extendingdiagonally toward the outer rim, circiimferf` f entially slotted brackets secured to the outer springs mounted Within .said brackets to cushion the p ull bars and limit their movement relative vto the outer rim, and lateral exrim through which the pull 'ba'rs extend andv tensions on the outer ends of said pull bars,

said extensions slidably engaged between said brackets an'd Sald outer rim. i

In'testiinony Whereof'I aix my si natui I 

